Toyota Avalon Service & Repair Manual: Dcm Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the DCM (Telematics Transceiver).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - AUXILIARY BATTERY AND GROUND)

(a) Disconnect the G9 DCM (Telematics Transceiver) connector.

*a

Front view of wire harness connector

(to DCM (Telematics Transceiver))

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G9-4 (E) - Body ground

Always

Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

G9-1 (+B) - G9-4 (E)

Always

11 to 14 V

G9-7 (IG2) - G9-4 (E)

Power switch on (IG)

11 to 14 V

G9-8 (ACC) - G9-4 (E)

Power switch on (ACC)

11 to 14 V

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Dcm Operation History

    Diagnosis System

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